Home / 135,543.16-187,037.94-78,162.76

Finding the Fourth Proportional to 135,543.16, 187,037.94 and 78,162.76

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Solution

The fourth proportional to 135,543.16, 187,037.94 and 78,162.76 is: 107,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,543.16 : 187,037.94 = 78,162.76 : x
  2. Step 2: Convert to fraction form
    135,543.16/187,037.94 = 78,162.76/x
  3. Step 3: Cross multiply
    135,543.16x = 187,037.94 × 78,162.76
  4. Step 4: Simplify right side
    135,543.16x = 14,619,401,615.11
  5. Step 5: Solve for x
    x = 14,619,401,615.11/135,543.16
  6. Step 6: Final answer
    x = 107,857.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.